Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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Evaluation Method for Entire Region of Antique Korean Peninsula Maps Using Geometrical Transformation

기하학적 변환에 의한 한반도 고지도의 전체 영역 평가 기법

  • 이대호 (경희대학교 후마니타스칼리지) ;
  • 오일환 (경희대학교 후마니타스칼리지)
  • Received : 2011.02.14
  • Accepted : 2011.03.02
  • Published : 2011.03.31
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Abstract

Because antique Korean Peninsula maps have many historical signification, we can estimate historical evidences by analyzing them. However, it is very difficult to compare antique maps with modern maps because the antique maps were made by arranging local regions. To resolve this difficulty, we transform antique maps by rotating, scaling and translating to compare with a reference map. Each antique map is rotated in the difference of principal axis angles of the target and the reference maps, and its width and height are scaled asymmetrically using width and height ratios of bounding boxes. Finally, the two regions are overlaid by adjusting their centroids, and then the antique map is evaluated by two similarity equations. Experimental results show that the similarities of region ratio and different angle are properly computed according to era. Therefore, the proposed method can be widely used to analyze the antique Korean Peninsula maps.

한반도 고지도들은 많은 역사적 의미를 가지고 있으므로, 이것을 분석하여 역사적인 사실들을 추정할 수 있다. 하지만, 고지도는 국부적인 영역들을 결합하여 전체적인 영토를 표현하기 때문에, 현재의 지도와 직접적으로 비교하는 것이 어렵다. 따라서 본 논문에서는 평가할 대상 고지도를 기준 지도의 특성에 맞게 회전, 크기 변환 및 위치이동을 수행하여 쉽게 영역을 비교할 수 있도록 변환한다. 한반도 영역의 주축을 계산하여 기준 지도의 주축의 차이만큼 회전하고, 외곽 사각형의 비율을 이용하여 비대칭적으로 폭과 높이의 크기를 수정한다. 마지막으로 영역의 중심을 일치하여 두 영역을 겹치고, 두 가지 유사도 수식을 이용하여 고지도를 평가한다. 실험 결과에서 영역 비율과 휘어짐 각도차의 유사도가 현대에 가까워지면서 유사도가 높아지는 것을 볼 수 있다. 따라서 제안하는 기법은 한반도의 고지도를 사료로 분석하는데 활용될 수 있을 것이다.

Keywords

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